In the UPS uninterruptible
power supply system, the backup battery pack is the power supply guarantee line
of the entire power supply system, and it is also the focus and difficulty of
the power supply maintenance work. In the system interruption accident, the
fault caused by the battery pack accounts for a large proportion, so, people
will be more cautious about the changes in backup battery technology. In the
past, most of the Online UPS backup batteries of Aerospace Baykee used
valve-regulated lead-acid batteries. The lead-acid batteries have shortcomings
such as low mass ratio, large volume and weight, low charge and discharge rate,
short life, and frequent date maintenance.
In order to solve the above
problems, the application of lithium iron phosphate batteries for Aerospace
Baykee UPS is increasing. Compared with traditional lead-acid batteries,
lithium-ion batteries have a longer service life, smaller size and weight, the
ability to operate in a wider range of environments, and can be charged and discharged
quickly with large currents. It also has superior high temperature resistance
which can still work normally at ﹣20℃～﹢65℃.
Lithium iron phosphate
battery products have the following characteristics:
1. High energy density, small size, light weight, excellent
safety performance and high reliability, long life, equipped with intelligent
management system, and green energy.
2.
Short-term backup
application can be configured.
3.
Super low
temperature charge and discharge performance, can achieve ultra low temperature
charging.
4.
Long cycle life.
5.
Battery
Management System (BMS) with multiple protection functions.
6.
Communication
between lithium battery pack and the equipment (CAN communication interface).
7.
Battery system
operation alarm, alarm local display and reporting function.
8.
Battery
management system with self-diagnostics.
9.
Feasible storage
records of 30 days of historical data.
10.
Can be set in
parallel to expand capacity.
11.
Optional LCD
display
Lithium-ion batteries have
the following advantages:
1. High energy density, with
high storage energy density, about 6-7 times that of lead-acid batteries.
2. High conversion
efficiency.
3. Long service life, cycle
service life ≥3000 times, according to the standard charge and discharge cycle
(25°C environment, 1C/1C), the capacity is attenuated to 80% of the nominal capacity.
4. No memory effect, no
charge and discharge delay.
5. The self-discharge rate is
very low, which is one of the most prominent advantages of the lithium-ion
battery.
6. The volume and weight are
small, the weight is about 1/5-6 of the lead-acid battery under the same
volume;
7. Wide operating temperature
range, can be used in the environment of -20℃～65℃.
8. The lithium battery adopts
a three-layer battery management system, from the battery cell to the battery
cabinet, and the battery cabinet parallel system to ensure the reliability of
the lithium battery layer by layer. Baykee lithium battery management system
has functions such as battery cell voltage and temperature detection, cell
current sharing management, charge and discharge detection, SOC, SOH
management, alarm management, report analysis and other functions which can
realize timely identification of battery failures, early warning, and active
isolation.
9. In terms of hardware
design, the lithium battery cabinet is equipped with a circuit breaker, and the
battery management module is equipped with fuses and relays to ensure rapid
action and protect the battery in the event of a fault.
10. In terms of operation and
maintenance management, lithium battery management system can be integrated
into UPS management system. Battery management and UPS management system are a
complete system. Lithium battery management system can upload battery
information to UPS system, and work together with Baykee UPS and network
management system to achieve intelligent battery management, reduce the
frequency of detection, and make the lithium battery operating status
checkable, manageable, and controllable at any time.
With the intensification of
environmental protection issues in recent years, as the best substitute for
lead-acid batteries, the application trend of lithium batteries is becoming
more and more extensive. Lithium batteries have achieved mature and successful
application in Baykee product series, such as data center, energy storage
systems, low frequency online UPS, high frequency online UPS, TYN series
on-off-grid solar inverter, portable lithium batteries energy storage series,
SI series home use lithium battery inverters, etc.
